An adapter between the Audit framework and transforms of a specific type.
It allows the framework to create a transform context and to invoke
type-specific setup and teardown code (e.g., for a model which
requires that a transaction be created).

beginTransformSequence

Begins a transform sequence. A transform sequence is a sequence of
transforms which use the same TransformAdapter subclass and are
applied in sequence to the same model. The sequence context allows the
transform adapters to share state through the sequence, typically to allow
optimization (e.g., to coalesce multiple transactions into a single
transaction). The framework ensures the following before invoking this
method: